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Old 11-23-2005, 02:44 AM   #1
bmxpunk
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Member#: 89599
Join Date: Jun 2005
Chapter/Region: RMIC
Location: middle of nowhere, wyoming
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1995 almost 22B:)
red

Default Turbo 2.5 Forgetting anything?

Ok so my friend has a 2.5 Rs that he put together from a few different cars.

97 2.5L Dohc block and heads
newer pistons from a Sohc block
This makes a slightly higher CR than stock correct?

ANy way he is going to turbo it over the weekend. We are using the front exhaust components, crossmember and turbo from a 93 Legacy turbo, which he plans only to push between 6-8psi

He is installing "7 range" Ngk plugs, a walbro fuel pump and has done the parrallel fuel mod. ON top of the he has added an FMU (fuel management unit thingy)

Besides the obvious engine management that he doesnt have yet, what else is he forgetting? I told him he will need to pull timing a bit with something, but the car is running on a 1.8L ecu which hopefully doesnt have as agressive of timing as the 1.5 ecu would (correct me If i am at all wrong here).

What else would you all reccomend? How much timing are you pulling from your rs-t setups? I am interested for my own swap which would probably be similar. Thanks, hopefully this car lasts more than a week
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Old 11-23-2005, 03:38 AM   #2
reddevil
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goes 12.387 @ 116.5

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Well, common timing pulling for non turbo ecu's for what I have read is a timing degree for every pound of boost.
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Old 11-23-2005, 03:44 AM   #3
bmxpunk
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OH CRAP!!!!!! maybe I will try that. did you pull any timing on your projects, mr devil? if so how?
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Old 11-23-2005, 04:03 AM   #4
Sko
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2005 Legacy 2.5i
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Well you might want to go a little safer than that... and you might not have to?

Get a good knock sensor, and good EM and a cheap labtop and some software, go out and run it at 5-6psi in third/fourth gear and if you hear it knock pull some timing, rinse wash and repeat til it doesn't knock. Mabe go 2-3 degrees more after that "edge" so your not living live too close to the "edge".

Last edited by Sko; 11-23-2005 at 04:08 AM.
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Old 11-23-2005, 08:30 AM   #5
GotTurbo
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SOON BMW STEEL GREY

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ok this is what else he will need a water pump off a turbo legacy or wrx cause factory one will not make it around the exhaust manifold. then you will need injectors cause if u max out the stock ones they might be not enuff. also i agree on em. if u go with emanage (speaking from my car project) you keep the timning belt at the same as factory set but the emanage allows u to reatard timing as needed also he would not need a fmu if he gets bigger injectors, fpr off a wrx/sti or u could crush ur facotry one that should be more then enuff fuel to the engine. how are u getting oil and coolant to the turbo? have u tapped the return line to the oil pan for the turbo? A/f guage ?


-matt
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